Using SQL query to find details of customers who ordered > x types of products

Question

Please note that I have seen a similar query here, but think my query is different enough to merit a separate question.

Suppose that there is a database with the fol

Answer 1

You could do it more simply:

select

    c.id,
    c.cname,
    count(distinct o.pid) as `uniques`

from o join c
on c.id = o.cid

group by c.id

having `uniques` > 10

Answer 2

Isn't that what you are looking for? Seems to be a little bit simpler. Tested it on SQL Server - works fine.

SELECT customer_name, COUNT(DISTINCT product_ID) as products_count FROM customer_table
INNER JOIN orders_table ON customer_table.customer_ID = orders_table.customer_ID
GROUP BY customer_table.customer_ID, customer_name
HAVING COUNT(DISTINCT product_ID) > 10